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We introduce Mix Encoder, a novel self-supervised learning framework for deep tabular data models based on Mixup [1]. Mix Encoder uses linear interpolations of samples with associated pretext tasks to form useful pre-trained representations. We further analyze the viability of tabular self-supervised learning by introducing VIME [2], an established representation learning framework for tabular dat
Electroporation is a technique used to transfect cells, i.e. to introduce nucleic acids in cells. The method consists in applying a voltage over the cells which leads to the opening of pores in the cell membrane through which cargo can diffuse to the cell interior. If the cells are cultivated on top of nanopores or nanostraws, dielectric structures one can achieve nanoelectroporation when applying
Neurodegenerative diseases, including Amyotrophic Lateral Sclerosis (ALS), Alzheimer’s Disease (AD), and Multiple Sclerosis (MS) emphasise the need of effective diagnostics tools to provide early diagnosis and disease prognosis as well as treatment. The Neurofilament Light Chain (NfL) antigen is a promising biomarker in immunoassays for neurodegenerative disease diagnosis due to its elevated conce
Abstract This thesis is an evaluation of piezoelectric speaker drivers for loudspeaker design. It goes through the electrical and sound generating properties of the speaker drivers and general theory of piezoelectric speaker drivers. A prototype single speaker driver loudspeaker has been realized and evaluated by measuring the frequency response and sound pressure level (SPL), total harmonic disto
This thesis considers the problem of finding an optimal control policy for control problems in continuous time and space, utilising reinforcement learning techniques. Finding analytical solutions to optimal control problems is often intractable due to involved constraints, cost-function objectives, and uncertainty. The focal point will be on reinforcement learning RL techniques to find approximate
This thesis investigates the potential of hydrogen fuel cell (HFC) technology as a sustainable alternative for regional rail transport within the framework of the EU-Rail Flagship Project 6. The thesis focuses on developing a hybrid powertrain model that incorporates both HFC and battery technologies, implementing a rule-based energy management strategy to assess fuel consumption and environmental
This study examines the mechanisms behind the gender gap in equity-based start-up funding within the Information and Communication Technologies sector in Sweden and contributes to discussions on gender equality by presenting strategies for fostering inclusive access to equity-based capital. The analysis is guided by the following three research questions: (RQ 1) Does gender affect Swedish entrepre
Batch high-shear mixers are used in a variety of different processing industries,such as the pharmaceutical, chemical and food industries. One company that utilize this type of mixers is Tetra Pak. High-shear mixers can be used for many different mixing scenarios, but only liquid-liquid mixing is discussed in the thesis. The batch high-shear mixer is constructed with a rotor-stator at the bottom o
Today communication, promotion and transaction of products are key functions of product packaging. The quality of the package print is therefore of great importance and needs to be consistent for large production quantities. One of the most common technologies for printing on paper or cardboard is flexographic printing. With this technology colors are applied one by one and through their combinati
A new pharmaceutical product suitable to act as a negative contrast agent for Computerized Scan (CT-scan) of the abdomen is under development. At the moment the product has the form of a powder, which when dispersed in water and whipped, gives a stable foam. The foam is ingested by individuals who are about to undergo a CT-scan, as a prior preparation step. The powder form has disadvantages such a
The aim of this master thesis was to develop adaptive control for a quadrotor using Gaussian process regression (GP). Online regression with GPs can provide many benefits as it is a flexible non-linear regression model that can provide uncertainty measures of the estimate. However, online GP regression may also gives rise to problems. Because of the high numerical complexity of GPs, sparse approxi
In order to fully understand the underlying processes of catalysis, it is vital to combine measurements of the catalyst surface, where the reaction occurs, with measurements of the gas concentration close to the catalyst. We have developed a convenient setup, which uses a single laser system to visualise the gas surrounding a working catalyst in situ at realistic operating conditions. Planar Lase
Conflicts are destructive for humans and societies, but are openings for rebuilding a more inclusive and sustainable society presented in the aftermath of conflict? This paper contributes to the growing research field and examines the link between conflict and window of opportunity for development, through a gender lens. Further, this study seeks to understand how conflict affected women’s socio
Drawing together the right to health in prison, and the understanding that yoga has numerous positive impacts on health, this paper explores the potential for using yoga as a way to improve prison conditions and experience from a human rights perspective. Secondary literature is used to answer two research questions: whether yoga is an appropriate and effective tool for realising international hea
Infrared absorption microscopy is a powerful chemometric tool with a wide variety of applications. It is, however, subject to considerable disturbances from atmospheric gases and scattering effects. As experimental fixes are not always applicable or advisable, data therefore needs to be computationally corrected before any attempt at an interpretation. This work designed, improved and validated se
Alfa Laval has been using its unique adhesive mixture for over 50 years for bonding of rubber gaskets to the corrugated plates used in their heat exchangers. The adhesive mix is designated GC6 and is composed out of an epoxy component and a phenolic component. GC6 has throughout the years shown exceptionally good performance in both adhesion to the rubber gasket and to the plate with minimal pre-t
Denna rapport innehåller en produktutvecklingsprocess som fokuserar på att integrera ett mjukstängningssystem för skjutdörrar i ett existerande skåp på IKEA. Enheten har idag vad som kallas för guider som håller skåpsdörrarna på plats. Målet är att skapa en enhet som besitter de viktigaste egenskaperna av en guide och av en mjukstängningsmekanism för att kunna ersätta den förstnämnda. Detta görs fThis master thesis includes a product development process focused on incorporating a soft closing system for sliding doors in an existing cabinet at IKEA. A soft closing system prevents the door from slamming into the furniture when closing it. The unit today has what is called guides, holding the cabinet doors in place. The aim is to create a device that possesses all of the crucial qualities of
